Initial comment on construction........
I am use to working on Industrial thermal cameras so when I first looked inside a F1G2 dongle it was a bit of a shock
The DUO R is no different.
The rear case is an alloy casting of decent quality and a heat transfer plate is attached to its interior to draw thermal energy away from the rear most large IC (unidentified at the moment) A nice touch and far better than the stack of heat transfer pads that I have seen on some cheap kit.
The front casing is made from ABS plastic that has been coated in conductive paint on its interior. The case halves are held together using two M1.6 x 18mm screws. I find this a poor choice of case fastening as four screws should be located at the corners for a secure case closure. The case is unsealed and NOT water resistant ! Remember, this is for use on a DRONE
The choice of connectors on the camera mimic those of the GoPro Hero and this is to enable compatibility with GoPro Hero Drone mounts and cables. There is no weather sealing around the connectors.
The PCB's used in the DUO camera appear to be of decent quality at first glance. The PCB's and other internal parts are secured in place using very small screws that bite into plastic mount points rather than brass inserts. Some plastic mounting points are already split, as is common with such a design.
The visible light camera uses a standard 'S' mount lens that is marked as being for 3MP sensors. The Lepton3 lens is the standard wide angle version with an FFC shutter mounted in front of it. A temperature sensor is mounted in front of the FFC shutter. The design of the Lepton mounting assembly appears over complicated and somewhat messy. Tiny screws bite into plain plastic mounts and the whole Lepton mount plastics look pretty ugly in both design and implementation. A strange Lepton assembly securing screw is present that tightens against a sprung plastic clip. The screw was loose on my unit and glue had been used to secure the assembly adjacent to the screws contact point with the clip.
The DUO camera design does NOT incorporate ANY shock mounting techniques to protect the PCB's, components or imaging sensors. This thing is suppose to hang under a drone, yet I see no evidence that it is ruggedized in any way at all. A FLIR basic design FAIL in my humble opinion. I suspect this camera would not take kindly to uncontrolled descents or flying through a rain shower.
Enough from me for now
Fraser